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A review of IATTC research on the early life history and reproductive biology of scombrids conducted at the Achotines Laboratory from 1985 to 2005

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Author
Margulies, Daniel
Scholey, Venon P.
Wexler, Jeanne B.
Olson, R.A.
Suter, Jenny M.
Hunt , Sharon L.
Date
2007

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Alternative Title
Resumen de las investigaciones de la CIAT del ciclo vital temprano y biología reproductora de los escómbrido realizadas en el Laboratorio de Achotines entre 1985 y 2005
Abstract
English:For nearly a century, fisheries scientists have studied marine fish stocks in an effort to understand how theabundances of fish populations are determined. During the early lives of marine fishes, survival isvariable, and the numbers of individuals surviving to transitional stages or recruitment are difficult topredict.The egg, larval, and juvenile stages of marine fishes are characterized by high rates of mortality andgrowth. Most marine fishes, particularly pelagic species, are highly fecund, produce small eggs andlarvae, and feed and grow in complex aquatic ecosystems. The identification of environmental orbiological factors that are most important in controlling survival during the early life stages of marinefishes is a potentially powerful tool in stock assessment.Because vital rates (mortality and growth) during the early life stages of marine fishes are high andvariable, small changes in those rates can have profound effects on the properties of survivors andrecruitment potential (Houde 1989). Understanding and predicting the factors that most stronglyinfluence pre-recruit survival are key goals of fisheries research programs.Spanish:Desde hace casi un siglo, los científicos pesqueros han estudiado las poblaciones de peces marinos en unintento por entender cómo se determina la abundancia de las mismas. Durante la vida temprana de lospeces marinos, la supervivencia es variable, y el número de individuos que sobrevive hasta las etapastransicionales o el reclutamiento es difícil de predecir.Las etapas de huevo, larval, y juvenil de los peces marinos son caracterizadas por tasas altas demortalidad y crecimiento. La mayoría de los peces marinos, particularmente las especies pelágicas, sonmuy fecundos, producen huevos y larvas pequeños, y se alimentan y crecen en ecosistemas acuáticos complejos. La identificación los factores ambientales o biológicos más importantes en el control de lasupervivencia durante las etapas tempranas de vida de los peces marinos es una herramientapotencialmente potente en la evaluación de las poblaciones.Ya que las tasas vitales (mortalidad y crecimiento) durante las etapas tempranas de vida de los pecesmarinos son altas y variables, cambios pequeños en esas tasas pueden ejercer efectos importantes sobrelas propiedades de los supervivientes y el potencial de reclutamiento (Houde 1989). Comprender ypredecir los factores que más afectan la supervivencia antes del reclutamiento son objetivos clave de losprogramas de investigación pesquera.
Issue/Article Nr
16
Pages
67
Publisher or University
Inter-American Tropical Tuna Commision
Series : Nr
Inter-American Tropical Tuna Commission Special Report
URI
http://hdl.handle.net/1834/23950
Collections
Inter-American Tropical Tuna Commission Special Report

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